Apparatus for delivering measured volumes of liquid



De. 15, 1925. i,56 6,210

J. R. s. HAWKER -ET AL APPARATUS FOR DELIVERING MEASURED VOLUMES 0FLIQUID Filed Dec. 153- 6 Sheets-Sheet l' Dec. 15, 1925.

- 1,566,210 J; R. S. HAWKER ET AL APPARATUS FOR DELIVERING MEASUREDVOLUMES 0F LIQUID Filed Dec. '15. 1924 6 sheets-Sheet 2 J. R. S.HAWKERET AL APPARATUS FOR DELIVERING MEASURED VOLUMES LIQUID Filed Dec.i5- 19 e Sheets-Sheet 4 Dec. 15,1925. I 1,566,210

, J. R. s. HAWKER ET AL APPARATUS FOR DELIVERING MEASURED VOLUMES 0FLIQUID Filed ec, 15. 1924 6 Sheets-Sheet I I r 0 ""116 Dec. 15, 1925'1,566,210 J. R. s. HAWKER ET AL APPARATUS FOR DELIVERING MEASUREDVOLUMES OF LIQUID Filed Dec, 15- 1924 6 Sheets-Sheet 6 PM... D...15,1925. 1.566.210. 1 ITED STATES, PATENT OFFICE.

JEE RAYMONi) sTuAn HAWKER, ALEXANDER HENRY HAYES, EEBBERT wInLiAu smTn,RALPH VERNON SMITH, AND rsAAc cLAunE vfcTon SMITH, 0E NOTTING- HAM,ENGLAND,

Arr-A ATus FOR nEmvEEme mEAsuEEn voLunrEs or LIQUID. Application fliedDecember 15, 1924. Sci-1:31.30. 755,048.

To all whom it may concern,- ling the supply and discharge of liquidinto 55 Be it known that we, JOHN BAYMoND and from the measuringchamber. STUART 'HAWKER, ALEXANDER HENRY Figs. 5 and 6 are lon itu inaland trans-.

HAYES, HERBERT WILLIAM -SMITH, RALPH verse sectional views 0 th airvalve. 6 VER ON SMLTH, and IsAAc CLAUDE VroToR Figs. 7 and 8- arerespectively views in SMITH, all subjects of. the Kin of Great partsectional front elevation and part sec- 9 Britain, and all residing at Nottingham, tion plan of the'meas'urin compartment. v England, haveinvented Apparatus for De- Fig. 9 is an elevation 0 the. trip ing gearlivering Measured Volumes of Liquid, and for enabling the liquid controlcoc and air 10 for whlch invention we have made applicavalve to beoperated, ,the'cover cap of thetion for patent in GreatBritain, No.30,456, compartment for the gear being removed 65 filed December. 4,1923, and we" do hereby for clearness. Y v v declare the following to bea, full, clear, and Figs. 10 and 11 are respectively a are exactdescription'of the invention, such as sectional front vlew and a planview 0 the will enable othersskilled in the art to which device forpredetermining, the volume of it appertains to make and use the same.liquid to be" delivered into the measuring ()ur invention relates toliquid. measuring chamber. x and dispensing devices of the vacuum t pe,Fig. 12 is an elevational view of the rod that is, of the type wherein asecon ary carrying radiating fingers adapted to entank or chamber isconnected with a main gage the tripping gear foroperating same, tank orreservoir'to receive liquid in preand I l determined amounts from thelatter where'- Fig. 13 is a plan view showing the relaby the liquidismeasured before being distive' positions of the fingers.

pensed, our purpose, generally speaking, Fig. 14 is a sectionalelevation of anal- 2 being to provide means for creating a ternativemeans of operating the tripping vacuum in the secondary tank or chamberto gear.- cause liquid to flow into thesame from the Fig.15 isa'sectional enlarged view of one main tank or reservoir, to providemeans of the elements employed in this alternative whereby the flow ofliquid into the seomeans, such) elements being anequivalent a0 ondarytank or chamber is cut off autos of the fingers shown in Fig. 13, andFig.

matically when a predetermined quantity of 16 is a sectional plan viewof the sleeve car- 85 liquid has entered said tank or chamber, and ryingthese elements.. to provide means whereby the liquid drawn Fig. '17 isadiagrammatic plan new of into said tank or chamber may be dis ensed themeans for predetermining the volume of therefrom, all in a simple,compact e cientliqiuid to be measured.

ly operating mechanism requiring a m1n1- ig.'18 is a sectional viewshowing a con- 9 mum am n f t n n 01 the part of the ventional form ofthree-way valve employed operator thereof. I in our device. 7

More particularly it is our purpose to Referring to the drawm it will beseen 40 provide various improvements in the details that theconfiguration o the apparatus Of 0111' mechan m wh reby i is cheap nshown is somewhat similar to existing de- 95 easy to produce andpositive and accurate vices in order to comply with the almost v in P igeneral aversion of persons to de art from In the accompanying drawings,wherein the conventional appearance 0 devices.

are illustrated certain preferredv embodi- H w v r. it, will b apparentth t th ments of our invention, and wherein like earance of the deviceay be alter d 100 characters-of reference denote correspondpreciablywithout departing from the'splrit ingi parts in h dif ere t V w andscope of this invention. The usualxcy- Figs. 1 and 2 are front and sideviews lindrical or polygonal casing 1 1s provlded,

' re pect vely, Of n Em dime o phaving a door or doors 2 for convenientacparatus according 'to this invention. cess to its interior. Themeasuring chamber: 10

" Figs. 3 and 4 are-front and side elevations is indicated by thereference numeral and v jespmtively of the mechanism for operat isprovided with a transparent portion 1 ing the cock and the air valve forcontrolmarked in any convenient manner to indicate discharge hose 31.

casing 22 1s a plug 50 having intersectingthe levels of differentvolumes of liquid. The liquid is raised into the chamber 3 through apipe 5 which is immersed in the liquid in the source of supply locatedbeneath the apparatus. A filter 6 and a nonreturn valve 7, both of whichmay be of any suitable type, are included in this uptake pipe 5.

The liquid is raised into the chamber 3 by creating a vacuum or partialvacuum therein, and this is effected by means of a suitable pump 8 whichcommunicates by means of a pipe 9 with the interior of the chamber 3,such pipe 9 preferably being carried down so as to discharge the airabstracted from the chamber 3 into the well accommodating the liquidbeneath the apparatus.

Located in pipe 5 is a three way valve of any preferred type, the samebeing herein shown as including a casing 22 having circumferentiallyspaced ports 22, 22 and 22 therein, the first of which is connected tochamber 3, the second of which is connected with that part of pipe 5between said valve and the liquid reservoir below the apparatus and thethird of which is connected with a. Rot-atable within said ports thereinso arranged that when the plug is in one rotated position, its normalposition, they establish communication between the casing ports 22 and22 the port 22 at the same time being blanked, so that upon creation ofa vacuum withinchamber 3 liquid will be drawn into the same. As isapparent from the showing in Fig. 18, however, if plug 50 is rotatedslightly, counterclock-wise in this instance, all of the ports 22 22 and22 will be blanked so that liquid may neither be drawn into nordischarged from chamber 3, while by slight continued rotation of saidplug ports 22 and 22 wil be placed in communication with one another andport 22 will be blanked, so that while liquid still may not be suppliedto chamber 3, it may be drawn off therefrom through hose 31. a

()ne of the chief characteristic features of this invention is the meansfor determining the volume of, liquid to be delivered into the chamber3. This means comprises a float 10 disposed within the chamber 3 andguided along vertical rods 11 fixed within the chamber 3. This floatcarries with it a depending tail' tube or sleeve 12 which movesvertically within a sleeve 13 and slides-over a central vertical rod 11This tail piece 12 carries a plurality of fingers l4 verticallyadjustable along said tailpiece and arranged at different heights and instepped formation, or in other words laterally offset with respect toone another. Each finger is in the form of a block 32" secured to thetail piece 12 in any suitable manner," each-"tail piece having a hole 34therein through which a rod 33 is adapted to be passed to hold all ofthe fingers in correct stepped relation with respect to one another.

ithin a sealed casing 32 that is fixed with respect to sleeve 13 is abracket 0 pivoted as at (Z for rocking movement and in turn havingpivoted thereto as at for horizontal swinging movement a trip arm a oneend of which extends through a slot in sleeve 13 into operative relationwith the fingers 1-1 amt the other end f of which engages a quick pitchthreaded member or worm 16 having a head 17 whereby it may be rotated toswing the trip arm a to cause it to lie in the path of vertical movementof any selected linger 14..

A spring 0 serves to return arm a to its normal horizontal positionwhenever it is rocked on pivot (Z, while aflixed with respect to saidarm so as to rock therewith is a stop member which lies normally in thepath of a finger 21 aflixed to a rotatable shaft 21 whereby rotation ofsaid shaft normally is prevented. Upon rocking movement of arm a,however, such as is imparted thereto by raising of float 10 andconsequent engagement of one of the fingers 1-1 with said arm, the stopmember y is moved out of engagementi. with the finger 21" and shaft 21*then is free to be ro tated.

Shaft 2i projects exteriorly of casing 32 and has atiixed thereto an arm21 connected by a link 23 with an arm 24 affixed to a stem 22 of thevalve plug 50. When stop 5 is in engagement with finger 21 as shown inFig. 9, arm 21 is held in the full line position of Fig. 3 and the threeway valve is held in the position of Fig. .18 establishing communicationbetween the pipe 5 and the. chamber 3 and denying comnuinication between tank 3 and the hose 31. \Vhen arm a. is tripped, l'iowever, andstop as a eonses quci ce moved out of engagement with finger 21, atension spring 20 attached at one end to a fixed part of easing l and atits other end to arm 21 pulls said arm to the dot and dash line positionaa shown in Fig. 3 in which position said arm is stopped by engagementof a laterally ottset handle portion of a pendant arm 20 carried by thearm 21 coming into contact. with an abutment 26 ina fixed bar 27. Vhenthe arm 21 is in the dot and dash line position of Fig. 3, the arm 2 isin a position where it holds the valve plug 50 blanking each of theports 22*, 22 and 22".

The valve arm 21 carries a laterally projecting pin 71. which engages ina slotted arm 25 secured to the valve spindle 25 of the air valve 25.This. air valve 25 is secured by a T piece 2t" and a threaded extension5 to an air pipe 9. The rotatable valveportion j of this valve 25 ishollow and causing Ii 60.

\ '3 and the supply ture m it will be apparent therefrom.

'or a too rapid return,

' with arm a.

' communicates with the atmosphere through the open end k,'an opening 1bringing thepipe 9, and consequently the measuring chamber 3 intocommunication with the atmosphere by registering with the opening m.Normally the valve portion j closes the opening m so-that the ump 8 isfree to exhaust air from the chain er 3 until the valve portion isrotated conse ent upon the float 10 reaching the pred termined level bymeans of the liquid drawn into the chamber 3 to replace the abstractedair. When the valve portion 9' is moved to open the aperthat atmosphericair will flow into the pipe 9 and that continued operation of the pump 8will have no effect in the chamber 3, the air passage in the valveportion 1' being larger than the passage in the chamber 3 communicatingwith the pipe 9. Should it' be required to discharge quickly thecontents of thechamher 3 the pump 8 can be worked in an oppositedirection to that in which it is worked to draw air from the chamber 3,with the result that air will be forced into the cham her 3 andaccelerate discharge of the liquid A clack valve 'n, closes the openingan when the pump is being employed to force air into the chamber 3.

In order to enable any back flow of liquid in the supply pipe 5 to bechecked, if desired any suitable type of non-return valve may beprovided which normally prevents return, of the liquid in the pipe 5 tothe well into which it is immersed.

The pump 8 is preferably of the well known radial blade type. The filter6 may beot any suitable or conventional type and is preferaby located inan accessible position as near as possible to the measuring chan'lber. I

Our device 'ope'ratesas follows: First the attendant manipulates worm16' to swing army: to a position where it will engage a selected one ofthe fingers 14 as the tail piece 12 moves upw-ard with float 10 underthe influence of liquid accumulating in chamber" 3, a dial or likeindicator 18 enabling the attendant, by means of a pointer 19 toascertain which of the fingers 14 will engage arm 15, the fingersas isunderstood being vertically spaced along tail piece 12, so that an exactredetermined quantity of liquid entering c amber 3 will raise float 10 adistance to bring a given finger into contact When'the proper adjustmentof the worm 16 has been made ump 8 is operated to draw air from chamber3 thus uid to flow into said chamber through pipe 5 and the three wayvalve which-is as aforesaid normally inposition providing communicationbetween chamber tank or' reservoir, valve. 25 at the same time beingclosed. When enough liquid has entered chamber 3 to raise the float 10 asufficient distance to cause the selected finger 14 to move up andstrike arm a, said arm is rocked on its pivot d and finger 21 isreleased,

arm 21 to the dot and dash line position a-a of Fig. 3, thusmanipulating the three way valve to cut off the supply of liquid tochamber 3 and at the same time opening valve 25 to the atmosphere so asto nullify the effect of any continued operation of pump 8. -VVhenarm'21 is stopped at the dot and dash line position we of Fig. 3 by thependant arm 29 engaging abutment 26, communication between the chamber 3and the hose 31 also is denied so that the predetermined volume ofliquid trapped within chamber 3 remains in said chain until theattendant releases arm 29 fromthe stop 26 whereupon spring 20 operatesto move arm 21 to the dotted line position of Fig. 3 with the resultthat the hose 31 is placed in communication with the chamber 3 wherebythe contents of said chamber may be drawn off through said hose, valve25 remaining open to the atmosphere and communication between-thechamber-3 an its source of liquid supply through pipe '5 continuing tobe cut anism to normal position the attendant merely pulls down' onhandle 28 of armv29 until finger 21 is in the position of Fig. .9

.behind stop 9. Slotted arm 25 may be'of such length as to constitute, astop' to prevent valve 50 being moved by spring 20 beyond a dispensingposition, or thispu'rpose may be accomplished in any other suitable ordesired manner.

whereupon spring 20 pulls ofl. To restore the mech-- In Figs. 14 and 17inclusive is shown a modification in the construction of the measuringmechanism. .Instead of moving a part of a trippingmechanism.opposite'toone of a number ofabutments which move W'ith'the float, thereverse method is em-' ployed, i. e. a selected one of the abutments ismoved opposite to a portion of the tripping mechanism. The abutments inthis particular instance comprise'an L shaped bracket -K the verticallimb of which is secured by a set screw L to a sleeve M and thehorizontal limb carries an adjustable abutment N- engage a gravity orspring reavdifierent horizontal plane, andthis sleeve, '1s connected formovement in union therewith to the float -10 by means of a square anaxially rotatablevertical square rod Q, such rod Q being rotated by aradial operating handle R, which can -move over a section sleeve Psliding with the float over" sleeve M moves upwards.

quadrant S which is notched or otherwise marked at S to enable the,operator to determine any particular volume of liquid it is desired tomeasure and deliver. The float may be marked as at 10 with numeralsindicating the volume to which the apparatus is set, such numerals beingadapted to be brought opposite the transparent portion 4 of themeasuring, chamber 3.

To enable a record to be kept of the volumes of liquid delivered by theapparatus, the sleeve M is provided with projections T diametricallyopposite the channels K and adapted to engage a finger U and to cause itto move on its pivot U when the sleeve M descends, this finger beingconnected by suitable means, as for instance, by the slotted arm V, to aregistering device, the well known Veedometer being a suitableregistering, device for the purpose of this invention. The finger U hasa pawl portion U for engagement by the projection 'l to prevent thefinger being. moved when the parent that similar recording means may beequally well employed with the tail piece 12 in the first describedmodification, the registering device itself being supported by thecasing accommodating the tripping mechanism, and in Fig. 1 suchregistering device is shown diagrammatically and indicated by thereference W.

What we claim is 1. In a liquid measuring and dispensing device, achamber having liquid inlet and discharge conduits conducted therewith,vacuum producing means connected with said chamber, means to vent saidchamber, a single valve controlling the inlet of liquid to and theoutlet of liquid from said chamber, said valve" normally establishingcommunication between said inlet conduit and said chamber and denyingcommunication between said chamber and said outlet con- It will beapduit, means automatically operating said valve to a position where itcuts off communication between said chamber" and vsaid inlet conduitwhile continuing to deny communication with said outlet conduit when apredetermined volume of liquid has entered said chamber, reieasablemeansto hold said valve in such position, and means operating automaticallyupon release of said holding means to move said valve to establishcommunication between said chamber and said outlet conduit 2. In aliquid measuring and dispensing device, a chamber having liquid inletand discharge conduits connected therewith, a float within said chamber,a downward extension on said float, a plurality of fingers carried bysaid extension at different elevations along the same and movabletherewith under the influence of liquid accumulating in said chamber, avertically rockable trip arm swingable horizontally into the path ofmovement of a selected finger, a member rockable with said arm, a valvein said inlet conduit, a means between said valve and said memberwhereby the latter holds said valve normally in a position establishingcommunication between said chamber and said inlet conduit, said memberbeing rockable, by engagement of a finger with said trip arm, to aposition in which it releases said valve whereby the latter may be movedto close communication between said inlet pipe and said chamber, andmeans auton'iatieally so moving said valve when said member is rocked.

In witness whereof we have signed this specification.

J. R. S. HAWKER. ALEXANDER H. HAYES. HERBERT W. SMITH. RALPH V. SMITH.

I. C. VICTOR SMITH.

